About this index – Tips on how to use this index, and instructions on maintaining consistency when making (or considering) changes to this index. Most important tip: try searching the index with Ctrl+F or ⌘+F in your Web browser.

Some of the links in this index point to pages on the English Wikipedia and elsewhere. English Wikipedia pages are not treated as formal policy on Commons, but may nevertheless serve as a helpful guide.

mw:Extension:CategoryTree – describes <categorytree> tags that can be added to articles so that a category for that article can be viewed as a dynamic tree on that page. (Using the page Special:Categorytree is faster, unless the tags are permanent.)

w:Wikipedia:Wikimedia Commons – has over 13 million media files (photographs, diagrams, animations, music, spoken text, video clips, etc.) available for use in any Wikimedia (community) project, to which anyone can contribute; recommended place to upload free images to, rather than to Wikipedia